2001
DOI: 10.1002/etc.5620200405
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Kinetics of polychlorinated biphenyl dechlorination and growth of dechlorinating microorganism

Abstract: The present study has investigated a correlation between the kinetics of polychlorinated biphenyl (PCB) dechlorination and the growth of dechlorinating microbial populations. Microorganisms were eluted from Aroclor 1248-contaminated St. Lawrence River (NY, USA) sediments and inoculated into clean sediments spiked with Aroclor 1248 at 10 concentrations ranging from 0 to 3.12 micromol/g sediment (0-900 ppm). The time course of PCB dechlorination and population growth were concurrently determined by congener-spec… Show more

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Cited by 18 publications
(44 citation statements)
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“…Most importantly, a significant correlation (P < 0.05) was found between the dechlorination rate without biomass normalization (mol Cl rem0ved.g sedimentl.day-l) and the specific growth rate of dechlorinators (day-') up to 300 ppm (Rhee et al, 1999b). These results and the finding that no significant growth occurred below the threshold concentration strongly indicate that dechlorination is growth-linked.…”
Section: Andchlorinating Microorganisms and Kineticsmentioning
confidence: 68%
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“…Most importantly, a significant correlation (P < 0.05) was found between the dechlorination rate without biomass normalization (mol Cl rem0ved.g sedimentl.day-l) and the specific growth rate of dechlorinators (day-') up to 300 ppm (Rhee et al, 1999b). These results and the finding that no significant growth occurred below the threshold concentration strongly indicate that dechlorination is growth-linked.…”
Section: Andchlorinating Microorganisms and Kineticsmentioning
confidence: 68%
“…Therefore, the threshold value may vary with factors that affect bioavailability such as hydrophobicity, particle size, and organic content. Nonetheless, it was reproducible under the same conditions (Sokol et al, 1998b;Rhee et al, 1999b).…”
Section: Kinetics Of Pcb Dechlorination Threshold Concentration and Cmentioning
confidence: 85%
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